Because of hostility and resentment, I may misestimate or entirely misunderstand someone else's attitude toward me, suspecting them of trying to do me in, when in fact there is nothing to the suggestion.

We either ought not to pretend to scientific forms, or we ought to study all the determining agencies equally, and endeavor, so far as it can be done, to include all of them within the pale of the science; else we shall infallibly bestow a disproportionate attention upon those which our theory takes into account, while we misestimate the rest, and probably underrate their importance.